/*
 * Copyright 2014 mango.jfaster.org
 *
 * The Mango Project licenses this file to you under the Apache License,
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */

package org.jfaster.mango.reflect;

import org.jfaster.mango.util.Objects;

import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.List;

/**
 * 方法参数描述
 *
 * @author ash
 */
public class ParameterDescriptor extends TypeWithAnnotationDescriptor {

    /**
     * 此参数在method参数列表中的位置，从0开始
     */
    private final int position;

    /**
     * 此参数在emthod参数列表中的名字
     */
    private final String name;

    public ParameterDescriptor(int position, Type type, List<Annotation> annotations, String name) {
        super(type, annotations);
        this.position = position;
        this.name = name;
    }

    public int getPosition() {
        return position;
    }

    public String getName() {
        return name;
    }

    @Override
    public boolean equals(Object obj) {
        if (obj == null)
            return false;
        if (getClass() != obj.getClass())
            return false;
        final ParameterDescriptor other = (ParameterDescriptor) obj;
        return Objects.equal(this.position, other.position)
                && Objects.equal(this.name, other.name)
                && Objects.equal(this.getType(), other.getType())
                && Objects.equal(this.getAnnotations(), other.getAnnotations());
    }

    @Override
    public int hashCode() {
        return Objects.hashCode(position, name, getType(), getAnnotations());
    }

}
